A groundbreaking study led by Edilson Mineiro Sá Jr. from the Energy Processing and Control Group at the Electrical Engineering Department of the Federal University of Ceará is making waves in the energy sector with its innovative approach to public lighting. The research, published in ‘Eletrônica de Potência’ (Power Electronics), outlines a photovoltaic system designed to supply energy for public lighting during peak demand hours, a time when the grid is often under strain.
This system includes a solar energy storage unit that harnesses the sun’s power and a lighting unit equipped with advanced electronic components. The solar unit operates at its maximum power point (MPP) to optimize energy capture, while the lighting unit utilizes a high-pressure sodium (HPS) lamp controlled by an electronic reactor that features zero-voltage switching (ZVS) technology. This design not only enhances efficiency but also reduces wear on components, extending their lifespan.
One of the standout features of this system is its ability to seamlessly switch between battery power and grid supply, a function managed by a microcontroller. This ensures that public lighting remains reliable even during peak demand, which is crucial for urban safety and infrastructure. “Our goal was to create a system that not only reduces the burden on the grid but also provides consistent lighting for communities,” said Sá Jr. “This approach can significantly lower operational costs for municipalities while promoting sustainability.”
The practical implications of this research are profound. As cities continue to grow and demand for energy surges, innovative solutions like this photovoltaic system offer a pathway to more resilient urban infrastructures. The prototype, which has been operational for over two years, demonstrates the viability of this technology in real-world conditions, paving the way for broader adoption.
Moreover, with the increasing focus on renewable energy sources and energy efficiency, this research aligns perfectly with global trends aimed at reducing carbon footprints and enhancing energy security. The ability to shave peak demand not only benefits local utilities but also contributes to a more stable energy grid, which is essential in an era of climate change and fluctuating energy prices.
This research represents a significant step forward in integrating renewable energy into public services, and its commercial applications could transform how cities approach energy management. As municipalities look for cost-effective, sustainable solutions, Sá Jr.’s work could serve as a model for future developments in the field.
For more information on this innovative research, visit the Energy Processing and Control Group at the Federal University of Ceará.
